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784c93e3ca
The last 4 MiB of RAM on those devices is likely used by trustzone firmware, and is unusable under Linux. Change the device tree memory node accordingly. The proprietary bootloader (S-BOOT) passes these memory ranges through ATAG_MEM; this change allows us to have the correct memory ranges without relying on ATAG_MEM. Tested-by: Henrik Grimler <henrik@grimler.se> # i9300, i9305 Signed-off-by: Artur Weber <aweber.kernel@gmail.com> Link: https://lore.kernel.org/r/20240217-exynos4-memsize-fix-v1-1-7858e9c5f844@gmail.com Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
28 lines
612 B
Plaintext
28 lines
612 B
Plaintext
// SPDX-License-Identifier: GPL-2.0
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/*
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* Samsung's Exynos4412 based M0 (GT-I9300) board device tree source
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*
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* Copyright (c) 2013 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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*/
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/dts-v1/;
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#include "exynos4412-galaxy-s3.dtsi"
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/ {
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model = "Samsung Galaxy S3 (GT-I9300) based on Exynos4412";
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compatible = "samsung,i9300", "samsung,midas", "samsung,exynos4412", "samsung,exynos4";
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chassis-type = "handset";
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/* bootargs are passed in by bootloader */
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memory@40000000 {
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device_type = "memory";
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reg = <0x40000000 0x3fc00000>;
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};
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};
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&sound {
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fm-sel-gpios = <&gpl0 3 GPIO_ACTIVE_HIGH>;
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};
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